CN102851763A - Integrated hollow fiber membrane spinning machine - Google Patents
Integrated hollow fiber membrane spinning machine Download PDFInfo
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- CN102851763A CN102851763A CN2012102829369A CN201210282936A CN102851763A CN 102851763 A CN102851763 A CN 102851763A CN 2012102829369 A CN2012102829369 A CN 2012102829369A CN 201210282936 A CN201210282936 A CN 201210282936A CN 102851763 A CN102851763 A CN 102851763A
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- 238000009987 spinning Methods 0.000 title claims abstract description 63
- 239000012528 membrane Substances 0.000 title claims abstract description 29
- 239000012510 hollow fiber Substances 0.000 title abstract description 5
- 238000005266 casting Methods 0.000 claims abstract description 54
- 238000003756 stirring Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 239000000835 fiber Substances 0.000 claims description 22
- 230000001112 coagulating effect Effects 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 19
- 238000005345 coagulation Methods 0.000 claims description 11
- 230000015271 coagulation Effects 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 11
- 230000008676 import Effects 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 23
- 238000005516 engineering process Methods 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 abstract description 5
- 238000005191 phase separation Methods 0.000 abstract description 5
- 239000002904 solvent Substances 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000001125 extrusion Methods 0.000 abstract 5
- 238000005273 aeration Methods 0.000 abstract 3
- 230000004927 fusion Effects 0.000 abstract 3
- 238000002145 thermally induced phase separation Methods 0.000 abstract 3
- 238000002360 preparation method Methods 0.000 abstract 2
- 238000007711 solidification Methods 0.000 abstract 2
- 230000008023 solidification Effects 0.000 abstract 2
- 230000006872 improvement Effects 0.000 description 9
- 230000008569 process Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 206010020843 Hyperthermia Diseases 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000036031 hyperthermia Effects 0.000 description 2
- 150000002605 large molecules Chemical class 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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- Separation Using Semi-Permeable Membranes (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention relates to an integrated hollow fiber membrane spinning machine which comprises a stirring device, a fusion de-aeration device, an extrusion spinneret device, a solidification forming device and a spinning device, wherein the extrusion spinneret device comprises a gear pump arranged at the bottom end of a reaction kettle of the fusion de-aeration device; an inlet of the gear pump is communicated with the inside of the reaction kettle; a spinneret mechanism is arranged at an outlet of the gear pump; and the extrusion spinneret device also comprises a membrane casting liquid metering device arranged at the bottom end of the reaction kettle. According to the invention, the stirring device, the fusion de-aeration device, the extrusion spinneret device, the solidification forming device and the spinning device required by the hollow fiber membrane preparation technology are integrated in a set of equipment, thus the space occupied by the spinning machine is greatly saved; two membrane preparation technologies of TIPS (thermally induced phase separation) and NIPS (non-solvent induced phase separation) are combined; in the TIPS method, the gear pump is adopted for extrusion silk production; and in the NIPS method, the silk production is performed in cooperation with the membrane casting liquid metering device, thereby improving the spinning convenience.
Description
Technical field
The present invention relates to the tunica fibrosa forming technique, particularly a kind of integrated form hollow-fibre membrane spinning machine.
Background technology
At present, membrane separation technique is a kind ofly to be widely used in that solution or gaseous matter separate, the concentrated and isolation technics of purifying.The membranous wall micropore gathers, and by a side of film, it is filter liquor that solvent and little molecule solute see through membranous wall to stoste under certain pressure, and large molecule solute tunicle is held back, and reaches separating substances and concentrated purpose.The film separation process is the dynamic filtration process, and large molecule solute is intercepted by membranous wall, flows out with concentrate, and film is difficult for blocked, can use for a long time continuously.Filter process can move under normal temperature, low pressure, and is without phase-state change, energy-efficient.
Hollow-fibre membrane is a kind of important form of diffusion barrier, and outer image is fibrous, and inner hollow has the self-supporting effect.Compare with the film kind of other forms, hollow fiber film assembly does not take up an area, and does not expend the energy, and investment return is obvious, and prospect is very wide.In traditional hollow-fibre membrane processing technology, be divided into two kinds of hyperthermia induced phase separation method (TIPS) and phase separation methods (NIPS).These two kinds of techniques respectively have unique processing characteristic, but the former process equipment is bigger than normal, and operating temperature is higher, difficult control; Among the latter process, most of material can't find suitable solvent to be dissolved into homogeneous phase solution under normal temperature or tepor condition, therefore can not normally spin hollow-fibre membrane.At present, the spinning machine that there is no a kind of hollow-fibre membrane can both use hyperthermia induced phase separation method and phase separation method to spin.
Summary of the invention
In order to overcome above-mentioned technical problem, the object of the present invention is to provide a kind of integrated form hollow-fibre membrane spinning machine, this spinning machine is integrated in each device in the filming technology in a set of equipment, has improved the convenience of spinning.
The technical solution adopted in the present invention is:
A kind of integrated form hollow-fibre membrane spinning machine comprises:
Agitating device, described agitating device comprise the stirring motor with the shaft of paddle and driving shaft;
The melting defoaming device, described melting defoaming device comprises reactor, and described shaft stretches into the reactor from the top and paddle places in the reactor fully, and described reactor is provided with heater;
The extruding spinning appts, described extruding spinning appts comprises the gear pump that is arranged on the reactor bottom, the import of described gear pump and reactor internal communication, the exit of described gear pump is provided with thread spraying structure, and described extruding spinning appts also comprises the casting solution metering device that is arranged at the reactor bottom;
Coagulation forming device, described coagulation forming device comprise the lower the temperature water coagulating basin of curing molding of wire vent;
Tunica fibrosa to coagulation forming carries out the device for spinning that spinning is collected.
As further improvement in the technical proposal, described reactor top is connected with three-way interface, and described three-way interface comprises an end that connects pressurized nitrogen and the other end that is connected vacuum extractor.
As further improvement in the technical proposal, described heater comprises a plurality of heating collars that enclose and be close to the reactor outer wall, and described heating collar equidistantly distributes from top to bottom, and reactor is divided into the multistage heating zone.
As further improvement in the technical proposal, the periphery at described shaft top is provided with the sealing surface that fits tightly with reactor, and described sealing surface is provided with seal groove, on the described seal groove sealing ring is installed.
As further improvement in the technical proposal, described casting solution metering device comprises the metering bolt, be provided with the casting solution passage that passes to thread spraying structure in the described reactor, described metering bolt comprises the bolt head that exposes to reactor and can be screwed into the screw rod of casting solution passage, and the part that described screw rod is screwed into the casting solution passage intercepts flowing of casting solution and forms the measurement channel that passes through for casting solution with the inwall of casting solution passage.
As further improvement in the technical proposal, described thread spraying structure comprises spinnerets, described spinnerets is provided with spinning head, described spinning head is included in the stoste import of side and at top casting solution baffle, the filament mouth that described stoste import is communicated with spinning head forms the stoste passage of separating with casting solution.
As further improvement in the technical proposal, be connected with one or above spinnerets heating rod on the described spinnerets.
As further improvement in the technical proposal, described reactor is provided with thermocouple, and described thermoelectricity is on a rare occasion held to stretch in the reactor and contacted with casting solution, and an end connects measuring instrument.
As further improvement in the technical proposal, described water coagulating basin is provided with the guide pulley group, and described guide pulley group will be pushed wire vent in the spinning appts and be guided in the water coagulating basin and re-boot in the device for spinning behind the cooling forming; Described guide pulley group is included in the fixed pulley I of water coagulating basin inside and consolidates the fixed pulley II on slot tail top at water-setting.
As further improvement in the technical proposal, the solid trench bottom of described water-setting is provided with circulating water outlet.
The invention has the beneficial effects as follows: the present invention is integrated in agitating device required in the hollow-fibre membrane filming technology, melting defoaming device, extruding spinning appts, coagulation forming device and device for spinning in a set of equipment, greatly saved taking up room of spinning machine, TIPS and two kinds of filming technologies of NIPS are merged in the present invention, when using the TIPS method, adopt gear pump extruding wire vent, when using the NIPS method, cooperate the wire vent of casting solution metering device, improved the convenience of spinning.
Description of drawings
The present invention is further described below in conjunction with drawings and embodiments.
Fig. 1 is that axle of the present invention measures intention;
Fig. 2 is front view of the present invention;
Fig. 3 is the assembling schematic diagram of agitating device of the present invention and reactor;
Fig. 4 is the schematic diagram of casting solution metering device of the present invention;
Fig. 5 is the structural representation of spinning head of the present invention;
Fig. 6 is the schematic diagram of coagulation forming device of the present invention.
The specific embodiment
As shown in Figure 1-Figure 3, a kind of integrated form hollow-fibre membrane spinning machine comprises agitating device, melting defoaming device, extruding spinning appts, coagulation forming device and device for spinning 6.
Agitating device comprises that the output shaft of stirring motor 2 is connected with shaft by the shaft coupling connection with the stirring motor 2 of the shaft 1 of paddle and driving shaft 1, and this shaft coupling is the helical spring shaft coupling.Whole agitating device is vertical direction and arranges.
Melt defoaming device and comprise reactor 3, shaft 1 stretches into the reactor 3 from the top and paddle places in the reactor 3 fully, and the casting solution in the reactor 3 is mixed.The outer surface of reactor 3 also is provided with heater, casting solution is heated deaeration process.
The extruding spinning appts comprises the gear pump 4 that is arranged on reactor 3 bottoms, the import of gear pump 4 and reactor 3 internal communication, and the exit of gear pump 4 is provided with thread spraying structure.The extruding spinning appts also comprises the casting solution metering device that is arranged at reactor 3 bottoms.Compare TIPS method and two kinds of hollow-fibre membrane manufacture crafts of NIPS method, the former casting solution viscosity is high, and is high to the requirement of reactor 3 crushing resistances, and wire vent is difficult; Latter's viscosity is low, and normal pressure or minute-pressure get final product wire vent, but is difficult for metering accurately.Therefore, in this device, adopt gear pump 4 extruding wire vent methods, increase simultaneously the casting solution metering device, its objective is and capture two kinds of difficult points in the method.When using the TIPS method, keep reactor 3 internal pressures 0.2 ~ 0.3MPa, the 4 extruding wire vents of mate gear pump greatly reduce operating personnel's labour intensity, and reduce the danger of high pressure-temperature.When using the NIPS method, keeping reactor 3 interior minute-pressure states, cooperate the wire vent of casting solution metering device, also is to a great extent, has improved the convenience of spinning.
The coagulation forming device is the container that carries out coagulating bath, comprises water coagulating basin 5, and the wire vent of spinnerets 13 curing molding of lowering the temperature is processed.
Device for spinning 6 mainly is that the tunica fibrosa to coagulation forming carries out spinning and collects, and has comprised spinning main body and spinning wheel.
As preferred embodiment, reactor 3 tops are connected with three-way interface 7, three-way interface 7 one ends are communicated with reactor 3 inside, one end the has connected can steel cylinder of pressure nitrogen gas, last end is connected with vacuum extractor, in the pipeline of three-way interface 7 connection pressurized nitrogens and vacuum extractor valve has been installed all.Pressurized nitrogen can pass in the reactor 3, keeps the pressure in the reactor 3.In addition, compare TIPS method and NIPS method, the former casting solution viscosity is high, and temperature is difficult to deaeration more than 200 ℃; Latter's viscosity is low, temperature about 60 ℃, easier deaeration.Therefore, vacuum extractor by three-way interface 7 taking out negative pressure in the reactor 3 to-0.098MPa, thereby make bubble under vacuum state, remove more faster.
As preferred embodiment, heater is a plurality of heating collars 8 that enclose and be close to reactor 3 outer walls, and heating collar 8 equidistantly distributes from top to bottom, and reactor 3 is divided into the multistage heating zone.If because fruit casting solution underfill reactor 3 inside, the cavity of reactor 3 underfill casting solutions partly heated be easy to cause casting solution burnt, so can not the integral body of reactor 3 be heated, can only the part that be lower than the casting solution liquid level be heated.Reactor 3 outer walls have 4 heating collars 8, when the casting solution liquid level is higher than nethermost heating collar 8, use 8 heating of this heating collar, when liquid level is higher than from the bottom up several second heating collar 8, below two heating collars 8 heat simultaneously, by that analogy.
There is the high temperature organic vapor also need satisfy the sealing load of 0.3MPa in the reactor 3, therefore, as preferred embodiment, the periphery at shaft 1 top is provided with the sealing surface that fits tightly with reactor 3, sealing surface is provided with seal groove 9, and sealing ring 10 is installed on the seal groove 9, thereby has greatly improved sealing effectiveness, thereby well control the required pressure of masking, as shown in Figure 3.
As preferred embodiment, the casting solution metering device comprises metering bolt 22.Be provided with the casting solution passage 11 that passes to thread spraying structure in the reactor 3, the bolt head of metering bolt 22 exposes to reactor 3, and its screw rod can be screwed in the casting solution passage 11.The part that screw rod is screwed into casting solution passage 11 can effectively intercept flowing of casting solution and form the measurement channel 12 that passes through for casting solution with the inwall of casting solution passage 11, as shown in Figure 4.When using NIPS legal system silk, mainly measure and control by 22 pairs of raw silk percentage of cocoons of metering bolt, this moment, gear pump 4 can be enabled simultaneously, also can not enable.
As preferred embodiment, thread spraying structure comprises spinnerets 13, spinnerets 13 is provided with spinning head 14, as shown in Figure 5, spinning head 14 is included in the stoste import of side and at the casting solution baffle 15 on top, the filament mouth that the stoste import is communicated with spinning head 14 forms the stoste passage 16 of separating with casting solution.Casting solution is under the water conservancy diversion of casting solution baffle 15, and along casting solution baffle 15 outer walls toward current downflow, stoste passage 16 is wrapped up by casting solution when stoste flows out stoste passage 16 in casting solution baffle 15 inside, forms hollow fiber film structure.
Such as Fig. 1-shown in Figure 2, as preferred embodiment, be connected with one or above spinnerets heating rod 17 on the spinnerets 13.Spinnerets heating rod 17 heats spinnerets 13 as required, thereby better controls the pore structure of wire vent.
As preferred embodiment, reactor 3 is provided with thermocouple 18, and thermocouple 18 1 ends stretch in the reactor 3 and contact with casting solution, and an end connects measuring instrument.The user is by the thermocouple 18 casting solution temperature in the monitoring reaction still 3 fast and accurately, thereby adjusts ensuing process program.
As shown in Figure 6, as preferred embodiment, water coagulating basin 5 is cubic type, and its degree of depth is greater than its width.Water coagulating basin 5 is provided with the guide pulley group, and the guide pulley group will be pushed wire vent in the spinning appts and be guided to re-boot to behind the cooling forming in the water coagulating basin 5 in the device for spinning 6 and collect.The guide pulley group is included in the fixed pulley I 19 of water coagulating basin 5 inside and in the fixed pulley II 20 on water coagulating basin 5 afterbody tops, by the setting of guide pulley group, has reduced the floor space of coagulating bath over half, the water consumption that also greatly reduces.
As preferred embodiment, water coagulating basin 5 bottoms are provided with circulating water outlet 21.Because of in the NIPS method, the purity of water coagulating basin 5 trough inner waters, finished film on hollow-fibre membrane plays critical impact, so locate to increase circulating water outlet 21, both the handled easily person more renew water, reduce labor intensity, make things convenient for again at non-solvent and change mutually other solvent formulas, can accomplish the effect of continous mode formulation optimization.
The above is the preferred embodiment of the present invention, and it does not consist of limiting the scope of the invention.
Claims (10)
1. integrated form hollow-fibre membrane spinning machine is characterized in that: comprising:
Agitating device, described agitating device comprise the shaft (1) with paddle and drive the stirring motor (2) of shaft (1);
The melting defoaming device, described melting defoaming device comprises reactor (3), and described shaft (1) stretches into the reactor (3) from the top and paddle places in the reactor (3) fully, and described reactor (3) is provided with heater;
The extruding spinning appts, described extruding spinning appts comprises the gear pump (4) that is arranged on reactor (3) bottom, the import of described gear pump (4) and reactor (3) internal communication, the exit of described gear pump (4) is provided with thread spraying structure, and described extruding spinning appts also comprises the casting solution metering device that is arranged at reactor (3) bottom;
Coagulation forming device, described coagulation forming device comprise the lower the temperature water coagulating basin (5) of curing molding of wire vent;
Tunica fibrosa to coagulation forming carries out the device for spinning (6) that spinning is collected.
2. integrated form hollow-fibre membrane spinning machine according to claim 1, it is characterized in that: described reactor (3) top is connected with three-way interface (7), and described three-way interface (7) comprises an end that connects pressurized nitrogen and the other end that is connected vacuum extractor.
3. integrated form hollow-fibre membrane spinning machine according to claim 1, it is characterized in that: described heater comprises a plurality of heating collars (8) that enclose and be close to reactor (3) outer wall, described heating collar (8) equidistantly distributes from top to bottom, and reactor (3) is divided into the multistage heating zone.
4. each described integrated form hollow-fibre membrane spinning machine in 3 according to claim 1, it is characterized in that: described reactor (3) top is provided with the sealing surface that the periphery with shaft (1) top fits tightly, described sealing surface is provided with seal groove (9), and sealing ring (10) is installed on the described seal groove (9).
5. integrated form hollow-fibre membrane spinning machine according to claim 1, it is characterized in that: described casting solution metering device comprises metering bolt (22), be provided with the casting solution passage (11) that passes to thread spraying structure in the described reactor (3), described metering bolt (22) comprises that part that the bolt head that exposes to reactor (3) and the screw rod that can be screwed into casting solution passage (11), described screw rod are screwed into casting solution passage (11) intercepts flowing of casting solution and forms the measurement channel (12) that passes through for casting solution with the inwall of casting solution passage (11).
6. integrated form hollow-fibre membrane spinning machine according to claim 1 or 5, it is characterized in that: described thread spraying structure comprises spinnerets (13), described spinnerets (13) is provided with spinning head (14), described spinning head (14) is included in the stoste import of side and at the casting solution baffle (15) on top, the filament mouth that described stoste import is communicated with spinning head (14) forms the stoste passage (16) of separating with casting solution.
7. integrated form hollow-fibre membrane spinning machine according to claim 6 is characterized in that: be connected with one or above spinnerets heating rod (17) on the described spinnerets (13).
8. each described integrated form hollow-fibre membrane spinning machine in 3 according to claim 1, it is characterized in that: described reactor (3) is provided with thermocouple (18), described thermocouple (18) one ends stretch in the reactor (3) and contact with casting solution, and an end connects measuring instrument.
9. integrated form hollow-fibre membrane spinning machine according to claim 1, it is characterized in that: described water coagulating basin (5) is provided with the guide pulley group, and described guide pulley group will be pushed wire vent in the spinning appts and be guided in the water coagulating basin (5) and re-boot in the device for spinning (6) behind the cooling forming; Described guide pulley group is included in the inner fixed pulley I (19) of water coagulating basin (5) and in the fixed pulley II (20) on water coagulating basin (5) afterbody top.
10. it is characterized in that according to claim 1 or 9 described integrated form hollow-fibre membrane spinning machines: described water coagulating basin (5) bottom is provided with circulating water outlet (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210282936.9A CN102851763B (en) | 2012-08-09 | 2012-08-09 | A kind of integrated form hollow-fibre membrane spinning machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210282936.9A CN102851763B (en) | 2012-08-09 | 2012-08-09 | A kind of integrated form hollow-fibre membrane spinning machine |
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| CN102851763A true CN102851763A (en) | 2013-01-02 |
| CN102851763B CN102851763B (en) | 2015-10-14 |
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| CN201210282936.9A Expired - Fee Related CN102851763B (en) | 2012-08-09 | 2012-08-09 | A kind of integrated form hollow-fibre membrane spinning machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108315829A (en) * | 2018-04-24 | 2018-07-24 | 苏州大学 | Aeration type electrostatic spinning apparatus and spinning process |
| CN108950709A (en) * | 2017-05-19 | 2018-12-07 | 中国石油化工股份有限公司 | A kind of device preparing hollow-fibre membrane |
| CN110079874A (en) * | 2019-06-05 | 2019-08-02 | 深圳明创自控技术有限公司 | A kind of novel spinning head |
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| CN202786552U (en) * | 2012-08-09 | 2013-03-13 | 广州中国科学院先进技术研究所 | Integrated type hollow fiber membrane spinning machine |
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| US3475523A (en) * | 1965-09-23 | 1969-10-28 | Monsanto Co | Monitored melt spinning method and apparatus |
| GB1200618A (en) * | 1966-12-30 | 1970-07-29 | Monsanto Co | Polymer mixer and mixing process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108950709A (en) * | 2017-05-19 | 2018-12-07 | 中国石油化工股份有限公司 | A kind of device preparing hollow-fibre membrane |
| CN108950709B (en) * | 2017-05-19 | 2020-12-18 | 中国石油化工股份有限公司 | Device for preparing hollow fiber membrane |
| CN108315829A (en) * | 2018-04-24 | 2018-07-24 | 苏州大学 | Aeration type electrostatic spinning apparatus and spinning process |
| CN110079874A (en) * | 2019-06-05 | 2019-08-02 | 深圳明创自控技术有限公司 | A kind of novel spinning head |
| CN110079874B (en) * | 2019-06-05 | 2020-05-29 | 海安县晋宏化纤有限公司 | Spinning nozzle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102851763B (en) | 2015-10-14 |
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